. . "2009-07-06 15:41:29.0" . "accepted"@en . . . "1" . "SDN:P07::CF12N482" . "false" . "1" . "" . "Mole concentration means number of moles per unit volume, also called \"molarity\", and is used in the construction mole_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species."@en . . . . "SDN:P07::CF12N482" . "mole_concentration_of_methane_in_air"@en . "2009-07-06 15:41:29.0" . . "SDN:P07::CF12N482" .